I saw a particularly attractive blue flower garden border outside my neighborhood laundryshop starring clerodendrums, daystars, blue salvia and roses.
Clerodendrum “Blue Elfin”
Daystar
Sky Blue Salvia
The Blue Border
To complete it they added plumbago for height. Quite a number of blue flowers in bloom at the same time right now.
Phlox plumbago
NATURE IN JAPAN 